Higdil Haissur Midaso (Bitul and Blios #43 - Shulchan Aruch YD 103:2)
Rabbi Dovid Cohen
Higdil Ha'Issur Midaso (הגדיל האיסור מדתו) : Nutramigen (whose taste, kashering); Carmine Manufacturer (b'lios, inedible). See seforim by Rabbi Cohen at www.kashrushalacha.com